/* ============================================================
   广西南宁熠阳信息技术有限公司 · 官网样式
   浅色主题 / 响应式 / 无外部依赖
   ============================================================ */

:root{
  /* 色彩 */
  --brand:        #0b63f6;
  --brand-600:    #0a55d2;
  --brand-700:    #0847b8;
  --brand-soft:   #eaf1ff;
  --teal:         #00a99a;
  --teal-soft:    #e3f7f4;
  --amber:        #d98a00;
  --amber-soft:   #fdf3e0;
  --violet:       #6b4ee6;
  --violet-soft:  #efecfe;

  --ink:          #0c1729;
  --ink-2:        #1d2b40;
  --text:         #3c4d66;
  --muted:        #6d7f99;
  --line:         #e2e8f2;
  --line-2:       #eef2f8;
  --bg:           #ffffff;
  --bg-soft:      #f5f8fd;
  --bg-deep:      #0c1729;

  /* 尺寸 */
  --container:    1160px;
  --radius:       14px;
  --radius-lg:    20px;
  --header-h:     72px;

  /* 阴影 */
  --sh-1: 0 1px 2px rgba(12,23,41,.05), 0 1px 3px rgba(12,23,41,.05);
  --sh-2: 0 6px 20px -8px rgba(12,23,41,.12), 0 2px 6px rgba(12,23,41,.05);
  --sh-3: 0 22px 48px -20px rgba(12,23,41,.24), 0 6px 16px -8px rgba(12,23,41,.1);

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
          "Liberation Mono", monospace;

  /* 动效 */
  --ease: cubic-bezier(.22,.68,.28,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scroll-padding-top:calc(var(--header-h) + 16px); }
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{ display:block; max-width:100%; }
h1,h2,h3,h4{ color:var(--ink); margin:0; line-height:1.3; font-weight:700; letter-spacing:-.01em; }
p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }
a{ color:inherit; text-decoration:none; }
code{ font-family:var(--font-mono); font-size:.88em; background:var(--bg-soft);
      border:1px solid var(--line); border-radius:5px; padding:.1em .42em; color:var(--brand-700); }
::selection{ background:rgba(11,99,246,.16); }

.container{ width:100%; max-width:var(--container); margin:0 auto; padding:0 24px; }

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed; inset:0 0 auto 0; z-index:100;
  height:var(--header-h);
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.site-header.is-scrolled{ border-bottom-color:var(--line); box-shadow:var(--sh-1); }
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:100%; gap:24px; }

.brand{ display:flex; align-items:center; gap:11px; flex-shrink:0; }
.brand-mark{ display:block; width:36px; height:36px; border-radius:10px; overflow:hidden;
             box-shadow:0 4px 12px -4px rgba(11,99,246,.5); }
.brand-mark.small{ width:32px; height:32px; box-shadow:none; }
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-text strong{ font-size:17px; color:var(--ink); letter-spacing:.02em; }
.brand-text em{ font-size:9.5px; font-style:normal; letter-spacing:.16em;
                color:var(--muted); font-family:var(--font-mono); }

.site-nav ul{ display:flex; align-items:center; gap:6px; }
.nav-link{
  display:block; padding:8px 13px; border-radius:9px;
  font-size:14.5px; font-weight:500; color:var(--text);
  transition:color .2s var(--ease), background .2s var(--ease);
  position:relative;
}
.nav-link::after{
  content:""; position:absolute; left:13px; right:13px; bottom:2px; height:2px;
  background:var(--brand); border-radius:2px;
  transform:scaleX(0); transform-origin:left; transition:transform .28s var(--ease);
}
.nav-link:hover{ color:var(--brand); background:var(--brand-soft); }
.nav-link.is-active{ color:var(--brand); font-weight:600; }
.nav-link.is-active::after{ transform:scaleX(1); }

.nav-cta{
  display:inline-block; margin-left:8px; padding:9px 18px; border-radius:10px;
  background:var(--ink); color:#fff; font-size:14.5px; font-weight:600;
  transition:transform .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
}
.nav-cta:hover{ background:var(--brand); transform:translateY(-1px); box-shadow:0 8px 18px -8px rgba(11,99,246,.7); }

.nav-toggle{
  display:none; width:42px; height:42px; border:1px solid var(--line); border-radius:10px;
  background:#fff; cursor:pointer; padding:0; position:relative;
}
.nav-toggle span{
  position:absolute; left:11px; right:11px; height:2px; background:var(--ink);
  border-radius:2px; transition:transform .28s var(--ease), opacity .2s var(--ease);
}
.nav-toggle span:nth-child(1){ top:14px; }
.nav-toggle span:nth-child(2){ top:20px; }
.nav-toggle span:nth-child(3){ top:26px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

.scroll-progress{
  position:absolute; left:0; bottom:-1px; height:2px; width:0;
  background:linear-gradient(90deg,var(--brand),var(--teal));
  transition:width .1s linear;
}

/* ---------- 首屏 ---------- */
.hero{
  position:relative; overflow:hidden;
  padding:calc(var(--header-h) + 74px) 0 84px;
  background:
    radial-gradient(900px 460px at 88% -8%, rgba(0,169,154,.13), transparent 62%),
    radial-gradient(760px 420px at 4% 6%, rgba(11,99,246,.13), transparent 60%),
    linear-gradient(180deg,#fbfdff 0%, #ffffff 60%);
}
.hero-glow{
  position:absolute; top:-180px; right:-140px; width:520px; height:520px; border-radius:50%;
  background:radial-gradient(circle, rgba(11,99,246,.16), transparent 66%);
  filter:blur(12px); pointer-events:none;
}
.hero-inner{
  position:relative; display:grid; grid-template-columns:1.08fr .92fr;
  gap:56px; align-items:center;
}
.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  padding:7px 15px; border-radius:999px;
  background:#fff; border:1px solid var(--line);
  font-size:13px; font-weight:500; color:var(--ink-2); box-shadow:var(--sh-1);
}
.eyebrow .dot{
  width:7px; height:7px; border-radius:50%; background:var(--teal);
  box-shadow:0 0 0 3px rgba(0,169,154,.18);
}
.hero h1{
  margin:22px 0 20px; font-size:clamp(30px,4.2vw,50px); line-height:1.2; letter-spacing:-.025em;
}
.hero h1 .hl{
  background:linear-gradient(100deg,var(--brand),var(--teal));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.lead{ font-size:16.5px; color:var(--text); max-width:620px; }
.lead strong{ color:var(--ink); font-weight:600; }

.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin:32px 0 40px; }
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:13px 26px; border-radius:11px; border:1px solid transparent;
  font-size:15px; font-weight:600; font-family:inherit; cursor:pointer;
  transition:transform .2s var(--ease), box-shadow .24s var(--ease),
             background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.btn-primary{ background:var(--brand); color:#fff; box-shadow:0 12px 26px -12px rgba(11,99,246,.85); }
.btn-primary:hover{ background:var(--brand-600); transform:translateY(-2px);
                    box-shadow:0 18px 34px -14px rgba(11,99,246,.9); }
.btn-ghost{ background:#fff; color:var(--ink); border-color:var(--line); box-shadow:var(--sh-1); }
.btn-ghost:hover{ border-color:var(--brand); color:var(--brand); transform:translateY(-2px); }
.btn-block{ width:100%; }

.hero-scope{
  display:grid; grid-template-columns:repeat(4,1fr); gap:14px;
  padding-top:30px; border-top:1px solid var(--line);
}
.hero-scope li{ display:flex; flex-direction:column; gap:3px; }
.hero-scope b{
  font-size:16px; color:var(--ink); font-weight:700; letter-spacing:-.01em;
  line-height:1.3;
}
.hero-scope span{ font-size:12.5px; color:var(--muted); line-height:1.6; }

/* 代码面板 */
.hero-panel{
  border-radius:var(--radius-lg); overflow:hidden;
  background:#0d1a2e; border:1px solid #1c2c46;
  box-shadow:var(--sh-3);
}
.panel-bar{
  display:flex; align-items:center; gap:12px;
  padding:12px 16px; background:#111f36; border-bottom:1px solid #1c2c46;
}
.panel-bar .dots{ display:flex; gap:6px; }
.panel-bar .dots i{ width:10px; height:10px; border-radius:50%; background:#324a6b; }
.panel-bar .dots i:nth-child(1){ background:#ff5f57; }
.panel-bar .dots i:nth-child(2){ background:#febc2e; }
.panel-bar .dots i:nth-child(3){ background:#28c840; }
.panel-title{ font-family:var(--font-mono); font-size:12px; color:#7d93b4; }
.panel-list{ padding:8px 0; }
.panel-list li{
  display:flex; align-items:flex-start; gap:13px;
  padding:15px 22px; border-bottom:1px solid rgba(255,255,255,.055);
}
.panel-list li:last-child{ border-bottom:0; }
.tick{
  width:21px; height:21px; flex:0 0 21px; margin-top:2px; border-radius:50%;
  display:grid; place-items:center;
  background:rgba(40,200,64,.14); color:#43d662; border:1px solid rgba(40,200,64,.32);
}
.panel-list b{
  display:block; font-size:14.5px; font-weight:600; color:#e6eefb;
  letter-spacing:.01em;
}
.panel-list em{
  display:block; font-style:normal; font-size:12.6px; line-height:1.6;
  color:#7d93b4; margin-top:3px; font-family:var(--font-mono);
}
.panel-foot{
  display:flex; align-items:center; gap:9px;
  padding:12px 18px; background:#111f36; border-top:1px solid #1c2c46;
  font-size:12.5px; color:#8ba3c4; font-family:var(--font-mono);
}
.pulse{
  width:8px; height:8px; border-radius:50%; background:#28c840;
  box-shadow:0 0 0 0 rgba(40,200,64,.6); animation:pulse 2s infinite;
}
@keyframes pulse{
  0%{ box-shadow:0 0 0 0 rgba(40,200,64,.55); }
  70%{ box-shadow:0 0 0 9px rgba(40,200,64,0); }
  100%{ box-shadow:0 0 0 0 rgba(40,200,64,0); }
}

/* ---------- 通用区块 ---------- */
.section{ padding:96px 0; }
.section-soft{ background:var(--bg-soft); border-block:1px solid var(--line-2); }
.section-head{ max-width:780px; margin-bottom:52px; }
.kicker{
  display:inline-block; font-family:var(--font-mono); font-size:12.5px;
  letter-spacing:.1em; color:var(--brand); font-weight:600; margin-bottom:14px;
}
.kicker-light{ color:#7fb3ff; }
.section-head h2{ font-size:clamp(24px,3vw,34px); margin-bottom:18px; letter-spacing:-.02em; }
.section-sub{ font-size:16px; color:var(--text); }
.section-head .section-sub{ margin-top:0; }

/* ---------- 简介 ---------- */
.about-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:28px 26px; box-shadow:var(--sh-1);
  transition:transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--sh-2); border-color:#cfdcf3; }
.card h3{ display:flex; align-items:center; gap:11px; font-size:17.5px; margin-bottom:12px; }
.card p{ font-size:14.8px; }
.ico{
  width:34px; height:34px; flex:0 0 34px; border-radius:10px;
  display:grid; place-items:center; font-size:15px; font-weight:700;
}
.ico-blue{ background:var(--brand-soft); color:var(--brand); }
.ico-teal{ background:var(--teal-soft); color:var(--teal); }
.ico-amber{ background:var(--amber-soft); color:var(--amber); }

.value-strip{
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  margin-top:44px; border:1px solid var(--line); border-radius:var(--radius);
  background:#fff; overflow:hidden; box-shadow:var(--sh-1);
}
.value-item{ padding:26px 22px; border-right:1px solid var(--line-2); }
.value-item:last-child{ border-right:0; }
.value-item b{
  display:inline-block; font-size:16.5px; color:var(--ink); font-weight:700;
  padding-bottom:8px; margin-bottom:10px; border-bottom:2px solid var(--brand);
  line-height:1.35;
}
.value-item p{ font-size:13.4px; color:var(--text); line-height:1.72; }

/* ---------- 架构图 ---------- */
.arch{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:28px; box-shadow:var(--sh-1); margin-bottom:44px;
}
.arch-layer{ display:flex; align-items:flex-start; gap:16px; }
.arch-tag{
  flex:0 0 82px; padding:7px 0; text-align:center; border-radius:8px;
  background:var(--bg-soft); border:1px solid var(--line);
  font-size:12.5px; font-weight:600; color:var(--ink-2);
}
.arch-layer-guard .arch-tag{ background:var(--brand-soft); border-color:#cddffd; color:var(--brand-700); }
.arch-items{ display:flex; flex-wrap:wrap; gap:8px; flex:1; padding-top:4px; }
.chip{
  font-size:13px; padding:6px 13px; border-radius:8px;
  border:1px solid var(--line); background:#fff; color:var(--ink-2);
}
.chip-client{ background:var(--violet-soft); border-color:#ded7fb; color:#4c34c4; }
.chip-edge{ background:var(--brand-soft); border-color:#d3e2fd; color:var(--brand-700); }
.chip-guard{ background:#fff4ea; border-color:#fbdcc0; color:#b96a00; }
.chip-biz{ background:var(--teal-soft); border-color:#cdeee9; color:#04806f; }
.arch-arrow{
  height:22px; width:2px; margin:0 0 0 122px; background:var(--line);
  position:relative;
}
.arch-arrow::after{
  content:""; position:absolute; left:50%; bottom:0; transform:translateX(-50%);
  border:4px solid transparent; border-top-color:var(--line);
}

/* ---------- 能力矩阵 ---------- */
.matrix{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.matrix-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:26px 24px; box-shadow:var(--sh-1);
  transition:transform .28s var(--ease), box-shadow .28s var(--ease);
}
.matrix-card:hover{ transform:translateY(-4px); box-shadow:var(--sh-2); }
.matrix-card header{ display:flex; align-items:center; gap:10px; margin-bottom:16px; }
.matrix-card h3{ font-size:16.5px; }
.matrix-ico{
  width:32px; height:32px; flex:0 0 32px; border-radius:9px;
  display:grid; place-items:center; font-size:15px;
  background:var(--brand-soft); color:var(--brand);
}
.matrix-card li{
  position:relative; padding-left:19px; margin-bottom:9px;
  font-size:14.4px; line-height:1.72;
}
.matrix-card li::before{
  content:""; position:absolute; left:2px; top:.66em;
  width:6px; height:6px; border-radius:50%; background:var(--teal);
}
.matrix-card li:last-child{ margin-bottom:0; }

/* ---------- 技术成果 ---------- */
.works-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.work{
  position:relative; background:#fff; border:1px solid var(--line);
  border-radius:var(--radius); padding:32px 26px 26px; box-shadow:var(--sh-1);
  display:flex; flex-direction:column;
  transition:transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.work::before{
  content:""; position:absolute; inset:0 0 auto 0; height:3px; border-radius:var(--radius) var(--radius) 0 0;
  background:linear-gradient(90deg,var(--brand),var(--teal));
  opacity:0; transition:opacity .3s var(--ease);
}
.work:hover{ transform:translateY(-5px); box-shadow:var(--sh-3); border-color:#cfdcf3; }
.work:hover::before{ opacity:1; }
.work-no{
  position:absolute; top:20px; right:24px;
  font-family:var(--font-mono); font-size:30px; font-weight:700;
  color:#eef3fb; line-height:1; letter-spacing:-.03em;
}
.work h3{ font-size:17.5px; margin-bottom:10px; position:relative; }
.work > p{ font-size:14.5px; color:var(--text); margin-bottom:16px; }
.work-points{ margin-bottom:18px; }
.work-points li{
  position:relative; padding-left:18px; margin-bottom:7px;
  font-size:13.9px; line-height:1.7; color:var(--text);
}
.work-points li::before{
  content:""; position:absolute; left:1px; top:.62em;
  width:6px; height:6px; border-radius:2px; background:var(--brand);
}
.work-tags{ display:flex; flex-wrap:wrap; gap:7px; margin-top:auto; padding-top:16px;
            border-top:1px dashed var(--line); }
.work-tags span{
  font-size:12px; padding:4px 10px; border-radius:999px;
  background:var(--bg-soft); border:1px solid var(--line); color:var(--muted);
  font-family:var(--font-mono);
}

/* ---------- 拓客流程 ---------- */
.flow{
  display:grid; grid-template-columns:repeat(6,1fr); gap:0;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg);
  box-shadow:var(--sh-1); overflow:hidden; margin-bottom:52px;
}
.flow-step{
  position:relative; padding:28px 20px 26px;
  border-right:1px solid var(--line-2);
  transition:background .28s var(--ease);
}
.flow-step:last-child{ border-right:0; }
.flow-step:hover{ background:var(--bg-soft); }
.flow-idx{
  display:inline-block; font-family:var(--font-mono); font-size:12px; font-weight:700;
  color:var(--brand); background:var(--brand-soft); border-radius:6px;
  padding:3px 8px; margin-bottom:13px;
}
.flow-step h4{ font-size:15.5px; margin-bottom:8px; }
.flow-step p{ font-size:13.4px; line-height:1.68; color:var(--muted); }
.flow-step::after{
  content:""; position:absolute; right:-5px; top:50%; transform:translateY(-50%) rotate(45deg);
  width:9px; height:9px; background:#fff; border-top:1px solid var(--line);
  border-right:1px solid var(--line); z-index:2;
}
.flow-step:last-child::after{ display:none; }

.growth-split{ display:grid; grid-template-columns:1.35fr .95fr; gap:40px; align-items:start; }
.growth-left h3{ font-size:22px; margin-bottom:24px; }
.growth-item{ display:flex; gap:15px; padding:18px 0; border-bottom:1px solid var(--line); }
.growth-item:last-child{ border-bottom:0; }
.gi-ico{
  width:38px; height:38px; flex:0 0 38px; border-radius:11px;
  display:grid; place-items:center; font-size:17px;
  background:var(--teal-soft); border:1px solid #cdeee9;
}
.growth-item h4{ font-size:15.8px; margin-bottom:6px; }
.growth-item p{ font-size:14.2px; color:var(--text); }

.quote-card{
  position:relative; background:#fff; border:1px solid var(--line);
  border-left:3px solid var(--brand); border-radius:var(--radius);
  padding:26px 24px; box-shadow:var(--sh-1); margin-bottom:20px;
}
.quote-mark{
  font-size:52px; line-height:.7; color:#dbe6fa; font-family:Georgia, serif;
  margin-bottom:10px;
}
.quote-text{ font-size:14.8px; line-height:1.85; color:var(--ink-2); }
.quote-by{ margin-top:14px; font-size:13px; color:var(--muted); }
.deliver-list{ display:grid; gap:10px; }
.deliver-list li{
  background:#fff; border:1px solid var(--line); border-radius:11px;
  padding:13px 16px; font-size:13.6px; color:var(--text); box-shadow:var(--sh-1);
}
.deliver-list b{ color:var(--ink); font-weight:600; }

/* ---------- 优势对比表 ---------- */
.table-wrap{
  border:1px solid var(--line); border-radius:var(--radius-lg);
  overflow:hidden; background:#fff; box-shadow:var(--sh-1); margin-bottom:44px;
}
.compare{ width:100%; border-collapse:collapse; font-size:14.4px; }
.compare caption{
  padding:20px 22px 16px; text-align:left; font-weight:700; color:var(--ink);
  font-size:16px; border-bottom:1px solid var(--line);
}
.compare th, .compare td{ padding:15px 22px; text-align:left; vertical-align:top; }
.compare thead th{
  font-size:13.4px; color:var(--muted); font-weight:600;
  background:var(--bg-soft); border-bottom:1px solid var(--line);
  letter-spacing:.02em;
}
.compare thead .th-us{ color:var(--brand); background:#eef4ff; }
.compare tbody th{
  font-weight:600; color:var(--ink); width:15%;
  border-bottom:1px solid var(--line-2);
}
.compare tbody td{ border-bottom:1px solid var(--line-2); }
.compare tbody tr:last-child th,
.compare tbody tr:last-child td{ border-bottom:0; }
.compare tbody tr:hover td{ background:#fcfdff; }
.compare .td-us{ color:var(--ink-2); font-weight:500; background:#f7faff; }

.pillar-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.pillar{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:24px 22px; box-shadow:var(--sh-1);
  transition:transform .28s var(--ease), box-shadow .28s var(--ease);
}
.pillar:hover{ transform:translateY(-4px); box-shadow:var(--sh-2); }
.pillar b{
  display:inline-block; font-size:15.5px; color:var(--ink);
  padding-bottom:8px; margin-bottom:10px; border-bottom:2px solid var(--brand);
}
.pillar p{ font-size:14px; color:var(--text); }

/* ---------- 联系我们 ---------- */
.section-contact{
  background:
    radial-gradient(700px 340px at 12% 0%, rgba(11,99,246,.22), transparent 60%),
    radial-gradient(700px 340px at 92% 100%, rgba(0,169,154,.2), transparent 60%),
    var(--bg-deep);
  color:#a8bad4;
}
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:start; }
.contact-copy h2{ color:#fff; font-size:clamp(24px,3vw,32px); margin-bottom:16px; }
.contact-copy > p{ font-size:15.5px; line-height:1.85; color:#a8bad4; }
.contact-list{ margin-top:32px; display:grid; gap:2px; }
.contact-list li{
  display:flex; gap:16px; padding:13px 0; border-bottom:1px solid rgba(255,255,255,.09);
  font-size:14.5px;
}
.contact-list span{ flex:0 0 76px; color:#6d84a3; font-size:13.4px; }
.contact-list b{ color:#e4ecf8; font-weight:600; }

.contact-form{
  background:rgba(255,255,255,.055); border:1px solid rgba(255,255,255,.13);
  border-radius:var(--radius-lg); padding:30px 28px;
  backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
}
.contact-form h3{ color:#fff; font-size:18px; margin-bottom:22px; }
.field{ margin-bottom:17px; }
.field label{ display:block; font-size:13px; color:#93a8c6; margin-bottom:7px; }
.field input, .field select, .field textarea{
  width:100%; padding:12px 14px; border-radius:10px; font-family:inherit; font-size:14.5px;
  background:rgba(255,255,255,.07); border:1px solid rgba(255,255,255,.16);
  color:#eef4ff; transition:border-color .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea{ resize:vertical; min-height:96px; }
.field input::placeholder, .field textarea::placeholder{ color:#6b81a1; }
.field select{ appearance:none; cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 4.5L6 8l3.5-3.5' fill='none' stroke='%2393a8c6' stroke-width='1.4' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 14px center; background-size:12px; padding-right:36px;
}
.field select option{ background:#0d1a2e; color:#eef4ff; }
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:#4d8dff; background:rgba(255,255,255,.11);
  box-shadow:0 0 0 3px rgba(77,141,255,.22);
}
.field input:invalid:not(:placeholder-shown){ border-color:#ff7a7a; }
.form-note{ margin-top:12px; font-size:13px; min-height:19px; color:#7fe0c9; }
.form-note.is-error{ color:#ff9c9c; }

/* ---------- 页脚 ---------- */
.site-footer{
  background:#08111f; color:#7e93b1; padding:40px 0 28px;
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-inner{ display:flex; flex-direction:column; gap:22px; }
.footer-brand{ display:flex; align-items:center; gap:13px; }
.footer-brand strong{ display:block; color:#dbe6f5; font-size:15px; }
.footer-brand p{ font-size:12.8px; color:#6d84a3; margin-top:2px; }
.footer-nav{ display:flex; flex-wrap:wrap; gap:8px 22px; font-size:13.6px; }
.footer-nav a{ transition:color .2s var(--ease); }
.footer-nav a:hover{ color:#7fb3ff; }
.copyright{
  padding-top:20px; border-top:1px solid rgba(255,255,255,.07);
  font-size:12.6px; color:#5d7291;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed; right:24px; bottom:24px; z-index:90;
  width:46px; height:46px; border-radius:50%; border:1px solid var(--line);
  background:#fff; color:var(--ink); cursor:pointer;
  display:grid; place-items:center; box-shadow:var(--sh-2);
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
}
.to-top.is-visible{ opacity:1; visibility:visible; transform:translateY(0); }
.to-top:hover{ background:var(--brand); color:#fff; border-color:var(--brand); }

/* ---------- 入场动画 ---------- */
.reveal{ opacity:0; transform:translateY(20px);
         transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .matrix{ grid-template-columns:repeat(2,1fr); }
  .works-grid{ grid-template-columns:repeat(2,1fr); }
  .pillar-grid{ grid-template-columns:repeat(2,1fr); }
  .hero-inner{ grid-template-columns:1fr; gap:44px; }
  .hero-panel{ max-width:640px; }
  .flow{ grid-template-columns:repeat(3,1fr); }
  .flow-step{ border-bottom:1px solid var(--line-2); }
  .flow-step:nth-child(3n){ border-right:0; }
  .flow-step:nth-child(n+4){ border-bottom:0; }
  .flow-step::after{ display:none; }
}

@media (max-width:820px){
  :root{ --header-h:64px; }
  .section{ padding:72px 0; }
  .hero{ padding:calc(var(--header-h) + 48px) 0 62px; }

  .nav-toggle{ display:block; }
  .site-nav{
    position:fixed; inset:var(--header-h) 0 auto 0;
    background:#fff; border-bottom:1px solid var(--line);
    box-shadow:var(--sh-3);
    max-height:0; overflow:hidden;
    transition:max-height .34s var(--ease);
  }
  .site-nav.is-open{ max-height:440px; }
  .site-nav ul{ flex-direction:column; align-items:stretch; gap:0; padding:10px 20px 20px; }
  .site-nav li{ border-bottom:1px solid var(--line-2); }
  .site-nav li:last-child{ border-bottom:0; padding-top:12px; }
  .nav-link{ padding:14px 4px; font-size:15.5px; }
  .nav-link::after{ display:none; }
  .nav-cta{ text-align:center; margin:0; }

  .about-grid{ grid-template-columns:1fr; }
  .value-strip{ grid-template-columns:repeat(2,1fr); }
  .value-item:nth-child(2){ border-right:0; }
  .value-item:nth-child(1), .value-item:nth-child(2){ border-bottom:1px solid var(--line-2); }
  .contact-grid{ grid-template-columns:1fr; gap:36px; }
  .growth-split{ grid-template-columns:1fr; gap:32px; }
  .hero-scope{ grid-template-columns:repeat(2,1fr); gap:20px; }
  .arch{ padding:22px 18px; }
  .arch-layer{ flex-direction:column; gap:10px; }
  .arch-tag{ flex:0 0 auto; align-self:flex-start; padding:6px 14px; }
  .arch-arrow{ margin-left:26px; }
}

@media (max-width:620px){
  .container{ padding:0 18px; }
  .matrix{ grid-template-columns:1fr; }
  .works-grid{ grid-template-columns:1fr; }
  .pillar-grid{ grid-template-columns:1fr; }
  .flow{ grid-template-columns:1fr; }
  .flow-step{ border-right:0; border-bottom:1px solid var(--line-2); }
  .flow-step:last-child{ border-bottom:0; }
  .section-head{ margin-bottom:38px; }
  .table-wrap{ overflow-x:auto; }
  .compare{ min-width:620px; }
  .compare th, .compare td{ padding:13px 16px; }
  .contact-form{ padding:24px 20px; }
  .to-top{ right:16px; bottom:16px; }
  .hero-actions .btn{ flex:1 1 100%; }
  .value-strip{ grid-template-columns:1fr; }
  .value-item{ border-right:0; border-bottom:1px solid var(--line-2); }
  .value-item:last-child{ border-bottom:0; }
  .panel-list li{ padding:13px 18px; }
  .hero-scope{ grid-template-columns:1fr; gap:0; }
  .hero-scope li{ padding:11px 0; border-bottom:1px solid var(--line-2); }
  .hero-scope li:last-child{ border-bottom:0; }
}

/* ---------- 可访问性 / 动效降级 ---------- */
:focus-visible{ outline:2px solid var(--brand); outline-offset:3px; border-radius:6px; }
.site-footer :focus-visible,
.section-contact :focus-visible{ outline-color:#7fb3ff; }

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important;
    transition-duration:.001ms !important; }
  .reveal{ opacity:1; transform:none; }
}

@media print{
  .site-header,.to-top,.nav-toggle{ display:none; }
  .section{ padding:26px 0; page-break-inside:avoid; }
  .work,.card,.matrix-card{ box-shadow:none; }
}